锌基合金的压铸件总是在氰化镀液中镀铜.Zinc base die castings are always copper plated in cyanide baths.如果顶钉调整不当,可能使铸件报废.Any out - of - adjustment pins can be reason for casting rejection.锑能增加铸件的硬度.Antimony adds to the rigidity of the casti...
The flatting mechanism of low luster paint of organic solvent was introduced.介绍了有机溶剂型哑光涂料的消光机理.Sitting on chair, both hands flatting on thigh naturally.坐在椅子上, 两手自然平放在大腿上.Now the Factory possesses various large - scale fl...